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206 lines
7.1 KiB
206 lines
7.1 KiB
![]()
11 years ago
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/*
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* Copyright 2008-2012 NVIDIA Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*! \file fill.h
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* \brief Fills a range with a constant value
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*/
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#pragma once
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#include <thrust/detail/config.h>
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#include <thrust/detail/execution_policy.h>
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namespace thrust
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{
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/*! \addtogroup transformations
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* \addtogroup filling
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* \ingroup transformations
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* \{
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*/
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/*! \p fill assigns the value \p value to every element in
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* the range <tt>[first, last)</tt>. That is, for every
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* iterator \c i in <tt>[first, last)</tt>, it performs
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* the assignment <tt>*i = value</tt>.
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*
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* The algorithm's execution is parallelized as determined by \p exec.
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*
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* \param exec The execution policy to use for parallelization.
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* \param first The beginning of the sequence.
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* \param last The end of the sequence.
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* \param value The value to be copied.
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*
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* \tparam DerivedPolicy The name of the derived execution policy.
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* \tparam ForwardIterator is a model of <a href="http://www.sgi.com/tech/stl/ForwardIterator.html">Forward Iterator</a>,
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* and \p ForwardIterator is mutable.
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* \tparam T is a model of <a href="http://www.sgi.com/tech/stl/Assignable.html">Assignable</a>,
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* and \p T's \c value_type is convertible to \p ForwardIterator's \c value_type.
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*
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* The following code snippet demonstrates how to use \p fill to set a thrust::device_vector's
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* elements to a given value using the \p thrust::device execution policy for parallelization:
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*
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* \code
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* #include <thrust/fill.h>
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* #include <thrust/device_vector.h>
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* #include <thrust/execution_policy.h>
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* ...
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* thrust::device_vector<int> v(4);
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* thrust::fill(thrust::device, v.begin(), v.end(), 137);
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*
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* // v[0] == 137, v[1] == 137, v[2] == 137, v[3] == 137
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* \endcode
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*
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* \see http://www.sgi.com/tech/stl/fill.html
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* \see \c fill_n
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* \see \c uninitialized_fill
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*/
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template<typename DerivedPolicy, typename ForwardIterator, typename T>
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void fill(const thrust::detail::execution_policy_base<DerivedPolicy> &exec,
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ForwardIterator first,
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ForwardIterator last,
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const T &value);
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/*! \p fill assigns the value \p value to every element in
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* the range <tt>[first, last)</tt>. That is, for every
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* iterator \c i in <tt>[first, last)</tt>, it performs
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* the assignment <tt>*i = value</tt>.
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*
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* \param first The beginning of the sequence.
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* \param last The end of the sequence.
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* \param value The value to be copied.
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*
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* \tparam ForwardIterator is a model of <a href="http://www.sgi.com/tech/stl/ForwardIterator.html">Forward Iterator</a>,
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* and \p ForwardIterator is mutable.
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* \tparam T is a model of <a href="http://www.sgi.com/tech/stl/Assignable.html">Assignable</a>,
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* and \p T's \c value_type is convertible to \p ForwardIterator's \c value_type.
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*
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* The following code snippet demonstrates how to use \p fill to set a thrust::device_vector's
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* elements to a given value.
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*
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* \code
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* #include <thrust/fill.h>
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* #include <thrust/device_vector.h>
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* ...
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* thrust::device_vector<int> v(4);
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* thrust::fill(v.begin(), v.end(), 137);
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*
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* // v[0] == 137, v[1] == 137, v[2] == 137, v[3] == 137
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* \endcode
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*
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* \see http://www.sgi.com/tech/stl/fill.html
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* \see \c fill_n
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* \see \c uninitialized_fill
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*/
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template<typename ForwardIterator, typename T>
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void fill(ForwardIterator first,
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ForwardIterator last,
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const T &value);
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/*! \p fill_n assigns the value \p value to every element in
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* the range <tt>[first, first+n)</tt>. That is, for every
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* iterator \c i in <tt>[first, first+n)</tt>, it performs
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* the assignment <tt>*i = value</tt>.
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*
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* The algorithm's execution is parallelized as determined by \p exec.
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*
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* \param exec The execution policy to use for parallelization.
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* \param first The beginning of the sequence.
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* \param n The size of the sequence.
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* \param value The value to be copied.
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* \return <tt>first + n</tt>
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*
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* \tparam DerivedPolicy The name of the derived execution policy.
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* \tparam OutputIterator is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>.
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* \tparam T is a model of <a href="http://www.sgi.com/tech/stl/Assignable.html">Assignable</a>,
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* and \p T's \c value_type is convertible to a type in \p OutputIterator's set of \c value_type.
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*
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* The following code snippet demonstrates how to use \p fill to set a thrust::device_vector's
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* elements to a given value using the \p thrust::device execution policy for parallelization:
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*
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* \code
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* #include <thrust/fill.h>
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* #include <thrust/device_vector.h>
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* #include <thrust/execution_policy.h>
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* ...
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* thrust::device_vector<int> v(4);
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* thrust::fill_n(thrust::device, v.begin(), v.size(), 137);
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*
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* // v[0] == 137, v[1] == 137, v[2] == 137, v[3] == 137
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* \endcode
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*
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* \see http://www.sgi.com/tech/stl/fill_n.html
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* \see \c fill
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* \see \c uninitialized_fill_n
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*/
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template<typename DerivedPolicy, typename OutputIterator, typename Size, typename T>
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OutputIterator fill_n(const thrust::detail::execution_policy_base<DerivedPolicy> &exec,
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OutputIterator first,
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Size n,
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const T &value);
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/*! \p fill_n assigns the value \p value to every element in
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* the range <tt>[first, first+n)</tt>. That is, for every
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* iterator \c i in <tt>[first, first+n)</tt>, it performs
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* the assignment <tt>*i = value</tt>.
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*
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* \param first The beginning of the sequence.
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* \param n The size of the sequence.
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* \param value The value to be copied.
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* \return <tt>first + n</tt>
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*
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* \tparam OutputIterator is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>.
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* \tparam T is a model of <a href="http://www.sgi.com/tech/stl/Assignable.html">Assignable</a>,
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* and \p T's \c value_type is convertible to a type in \p OutputIterator's set of \c value_type.
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*
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* The following code snippet demonstrates how to use \p fill to set a thrust::device_vector's
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* elements to a given value.
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*
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* \code
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* #include <thrust/fill.h>
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* #include <thrust/device_vector.h>
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* ...
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* thrust::device_vector<int> v(4);
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* thrust::fill_n(v.begin(), v.size(), 137);
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*
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* // v[0] == 137, v[1] == 137, v[2] == 137, v[3] == 137
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* \endcode
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*
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* \see http://www.sgi.com/tech/stl/fill_n.html
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* \see \c fill
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* \see \c uninitialized_fill_n
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*/
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template<typename OutputIterator, typename Size, typename T>
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OutputIterator fill_n(OutputIterator first,
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Size n,
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const T &value);
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/*! \} // end filling
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* \} // transformations
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*/
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} // end namespace thrust
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#include <thrust/detail/fill.inl>
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